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Determine what attributes were changed in Rails after_save callback?
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Aaron Brager
60.7k1616 gold badges143143 silver badges255255 bronze badges
answered Oct 5 '10 at 8:09
Radek PavienskyRadek Paviensky
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How to write LaTeX in IPython Notebook?
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edited Jun 18 '14 at 12:36
katahdin
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answered May 21 '13 ...
Does Swift have access modifiers?
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422
As of Swift 3.0.1, there are 4 levels of access, described below from the highest (least restr...
Renaming xcode 4 project and the actual folder
I know how to rename the project in Xcode 4, but how do you rename the source folder? The thing is that renaming the project in Xcode, does only rename within Xcode (Though it is progress compared to previous) - but why Xcode is not renaming the folder in the filesystem I don't know.
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Build an ASCII chart of the most commonly used words in a given text [closed]
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It IS not worth it
– user216441
Jul 4 '10 at 6:18
4
LabVIEW's very happy...
Gradle: Execution failed for task ':processDebugManifest'
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134
Found the solution to this problem:
gradle assemble -info gave me the hint that the Manifests h...
How to find out the number of CPUs using python
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Nadia AlramliNadia Alramli
94.1k3131 gold badges166166 silver badges149149 bronze badges
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Get visible items in RecyclerView
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Vasily Kabunov
4,8391212 gold badges3939 silver badges4646 bronze badges
answered Jul 31 '14 at 7:50
yigityigit
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Best way to create unique token in Rails?
...lemented in Rails 5 ActiveRecord's secure token implementation.
-- Rails 4 & 3 --
Just for future reference, creating safe random token and ensuring it's uniqueness for the model (when using Ruby 1.9 and ActiveRecord):
class ModelName < ActiveRecord::Base
before_create :generate_token
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How to hide element using Twitter Bootstrap and show it using jQuery?
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400
The right answer
Bootstrap 4.x
Bootstrap 4.x uses the new .d-none class. Instead of using ei...